replaceFieldMap (field_to_map_index, field_to_map ) #Create a list of append datasets and run the the toolĪrcpy.
#Arcpy add grid mapping update
addInputField (append_layer, field_map ) #We edited a copy, update our data grid object with itįieldmappings. getFieldMap (field_to_map_index ) #Update its data source to add the input from the the append layerįield_to_map. findFieldMapIndex (field_map ) #Grab "A copy" of the current field map object for this particular fieldįield_to_map = fieldmappings. e.g 'TaxPin'įield_to_map_index = fieldmappings. append ( ( 'Balance', 'Amount' ) ) for field_map in list_of_fields_we_will_map : #Find the fields index by name. append ( ( 'SwissBankNo', 'RetirementFundAccNo' ) ) append ( ( 'TaxPIN', 'Permanent_Identifier' ) ) List_of_fields_we_will_map = #Lets chuck some tuples into the list we made addTable (append_layer ) #Lets map fields that have different names! FieldMappings ( ) #Like when you manually choose a layer in the toolbox and it adds the fields to gridįieldmappings. Target_layer = r 'C:\target_layer.shp' #This object looks like the empty grid of fields #you see when you first open the append tool in the toolboxįieldmappings = arcpy. Mapping input fields to output fields-ArcPy Get Started | ArcGIS for Desktop Here are some of the sources I've looked at so far:įield mapping and Python scripting | ArcGIS Blog I'd like to see a nice, simple Append tool example if possible.Īlso, how does field mapping work if some fields are the same and others are different? I haven't run across a good example that deals with this problem. I'd like to do 'real' field mapping, but so far the examples I've found have a bit more complicated or focus mainly on the Merge tool. and it just does not work (even though it throws no errors). Ideally I'd like to move away from this style of coding as I am aware it can be rather clunky/lengthy. I've ran the append process manually using the geoprocessing tool and copied the python snippet of the field mapping component and am left with an output attribute table that has all null values. but this is where I run into trouble with my script. My workflow has been to update the 'map service' feature class on a daily basis by deleting all the records and loading the data manually, selecting the NO_TEST option, and manually mapping the fields where the names are different. The data is essentially the same, but the schemas are slightly different half of the fields are the exactly the same, but others have different names. One is the authoritative source edited by our address coordinator and the other is used as to host a map service. Having a bit of trouble with the field mapping component of the append tool I cannot seem to get it to work properly as I am left with a feature class that is populated with all the features, but the attribute table remains blank.īackground info: I have two feature classes in an enterprise geodatabase with address point data.
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